NOTE:The brand name, Wallace & Tiernan is owned by Evoqua Water Technologies. High precision pressure gauges and calibrators that were once branded as Wallace & Tiernan are now owned by WIKA Instruments. FLW, Inc. is a distributor of WIKA Instruments product and is in no way affliated with or represents Evoqua.

Teledyne Hastings Alert: Please note that this item is only available for shipping addresses within the states of California, Nevada, & Arizona

The bi-directional sensor can also be referred to as a dual channel sensor since it utilizes two hall effect sensing elements, physically offset from each other. Each element generates a single channel of target information, identical in frequency and polarity, but offset in the time domain (phase shifted).

Special circuits inside the sensor are designed to calibrate each channel to its application target, then analyze these two channels of information for a phase lead/ lag condition. The direction output will then provide a logic 1 level for clockwise or a logic 0 for counterclockwise rotation, assuming proper sensor orientation.

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